In July, Swansea typically sees daytime highs of 18.3°C and overnight lows around 12.6°C. Compared to the annual average high of 12.3°C, July runs +6.0°C.
July in Swansea averages a daytime high of 18.3°C and an overnight low of 12.6°C.
July runs +6.0°C compared to Swansea's annual average high of 12.3°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 18.3°C and cooler evenings around 12.6°C.